Bearing Machinery Technology Co., Ltd

NSK 35bd5020 Bearing

 

Double Row Slewing Bearing

The double-row  slewing bearing can carry axial load, tilting moment and radial loads at the same time. The top ball mainly carries the axial load and positive tilting moment. The drop ball takes the opposite tilting moment. This is the reason for the loading capacity of the double row ball slewing bearing being larger than the four-point contact ball slewing bearing; however, the frictional ratio is much larger. than the latter. The  double row ball slewing bearing consists of a inner ring, outer ring, balls in double rows, spacers, sealing device, and other components. Due to the top ball mainly taking the axial load and tilting moment loads, the size of top balls are larger than the drop ball. In order to accommodate the various working condition at different axial load, tilting moments and axial load, the angle of contact would be adjusted accordingly. The rings structure can be divided into two types, integral type and split type. Generally, the integral type maintains a stronger rigidity. The split type is more convenient to adjust; the two segregate rings are fastened by bolts prior to delivery. The  double row slewing bearing has cages (or spacing blocks) among the balls. Only when large loading is requested would the full ball type be applied. Loading capacity for full ball type is definitely larger. However, the increased friction generated by this design allows for the balls to be easily scratched. The double row slewing bearing is mainly for the working conditions when carrying an axial load, larger tilting moment, and where the mounting place is limited in radial direction. This structure provides good performance when fit into an installation when an amount of deformation may be allowed.

Excavator Komatsu PC600-7/ PC600LC-6 Slewing Ring, Swing Circle, Slewing Bearing
Excavator Komatsu PC600-7/ PC600LC-6 Slewing Ring, Swing Circle, Slewing Bearing
Ball Bearings
TIMKEN
Se5a Slewing Drive for PV/Cpv/Csp Solar Tracker System
Se5a Slewing Drive for PV/Cpv/Csp Solar Tracker System
1.97
UCTB209-26
Excavator Hitachi Zx850-3 Slewing Ring, Slewing Bearing, Swing Circle
Excavator Hitachi Zx850-3 Slewing Ring, Slewing Bearing, Swing Circle
0 Inch | 0 Millimete
N/A
Slewing Ring with Limited Clearance Ungeared 250.15.0375.013
Slewing Ring with Limited Clearance Ungeared 250.15.0375.013
Cast Steel
0883450962667
Slewing Bearing with External Gear 231.21.0775.013
Slewing Bearing with External Gear 231.21.0775.013
Expansion
4 Bolt Square Flange
Excavator Kobelco Sk200-5 Slewing Bearing, Slewing Ring, Swing Circle
Excavator Kobelco Sk200-5 Slewing Bearing, Slewing Ring, Swing Circle
FAG BEARING
Ball Bearing
Excavator Komatsu PC220LC-8 Slewing Ring, Slewing Bearing
Excavator Komatsu PC220LC-8 Slewing Ring, Slewing Bearing
Bearings
0
Four-Point Contact Ball Slewing Bearing 9o-1b20-0223-0547-1 Non-Gear Single-Row
Four-Point Contact Ball Slewing Bearing 9o-1b20-0223-0547-1 Non-Gear Single-Row
8483.20.40.80
3.15 Inch | 80 Milli
Excavator Kato HD250-5 Slewing Bearing Swing Circle
Excavator Kato HD250-5 Slewing Bearing Swing Circle
Cone; Class 3 Precis
1.625 Inch | 41.275
Excavator Volvo Ec210BNC Swing Circle, Slewing Bearing, Slewing Ring
Excavator Volvo Ec210BNC Swing Circle, Slewing Bearing, Slewing Ring
REXNORD
B04144
Excavator Komatsu PC300-6 Slewing Ring, Swing Circle, Slewing Bearing
Excavator Komatsu PC300-6 Slewing Ring, Swing Circle, Slewing Bearing
B04311
NSK
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Slew Drive Motor
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Kmi Slew Drives
Other Specific Model Slewing Bearing
Kinematics Slewing Drive
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Double Row Ball Slewing Ring Bearing